<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="bootstrap/css/bootstrap.css">

</head>
<body>
    <div class="container">
        <button class="btn btn-default">提交</button>
        <button class="btn btn-danger">提交</button>
        <button class="btn btn-success">提交</button>
        <button class="btn btn-warning">提交</button>
        <button class="btn btn-primary">提交</button>
        <img src="images/timg1.jpg" alt="" class="img-circle">
        <img src="images/timg.jpg" alt="" class="img-rounded">
        <img src="images/down.jpg" alt="" class="img-thumbnail">

        <table class="table table-hover table-bordered text-center">
          <tr class="warning">
              <td>1</td>
              <td>1</td>
              <td>1</td>
          </tr>
          <tr class="info">
              <td>1</td>
              <td>1</td>
              <td>1</td>
          </tr>
        </table>
    </div>
    <script src="bootstrap/js/jquery-3.3.1.js"></script>
    <script src="bootstrap/js/bootstrap.js"></script>
    
</body>
</html>